index.js

const express = require("express");
const mongoose = require("mongoose");
const dotenv = require("dotenv");
const path = require("path");
const todoRoutes = require("./routes/todoRoutes.js");
const bodyParser = require("body-parser");
const cors = require("cors");

mongoose.Promise = global.Promise;
dotenv.config();
const PORT = process.env.PORT || 5000;

const app = express();

app.use(function (req, res, next) {
  if (req.originalUrl && req.originalUrl.split("/").pop() === "favicon.ico") {
    return res.sendStatus(204);
  }
  return next();
});

app.use(cors());

//Parsers
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

// Routes
app.use("/", todoRoutes);

// Connection to db
const mongoDB = process.env.MONGODB_URI || process.env.DB_URL;
async function connect() {
  try {
    mongoose.connect(
      mongoDB,
      {
        useNewUrlParser: true,
        useUnifiedTopology: true,
        useFindAndModify: false,
      },
      () => {
        console.log("Connected to db!");
        app.listen(PORT, () =>
          console.log(`Server Up and running on port ${PORT}`)
        );
      }
    );
  } catch (err) {
    console.error(err);
  }
}

connect();